Yarn guide



H. HOWORTH YARN GUIDE Filed Aug. 21, 1935 July 19, 193s INVENTOR Harm nHowey-H1 Fatented July E9, 3558 V angers YARN GUEZE Harmon Howorth,umberland, Mai, assignor to Celanese Corporation of America, acorporation of Delaware Application August 21, 1935, Serial No. 37,133

3 Claims. iii are-15o The roller guide of the instant invention consistsThis invention relates to improvements in textile working devices, andmore particularly to a roller guide to be usedin place of guide eyes,etc. on yarn winding, twisting and coating machines.

An object of the invention is the construction of a guide, for yarnprocessing devices wherein the yarn travels from a supply package to atakeup package, that applies arolling friction on the yarn. Anotherobject of this invention is the production of a guide that has a longerlife than guides heretofore used. Other objects of the in vention willappear from the following detailed description and drawing.

In the drawing wherein like reference numerals refer to the same orsimilar elements:

Figure l is a front elevation, partly in section, of an assembled guidemember constructed in accordance with this invention.

Figure 2 is an end view of the guide shown in Figure l.

In the treatment of yarns wherein a lubricant, coating, size,plasticizer or the like is applied to yarn and in the twistingandrewinding of yarn. it is found advantageous to use roller guides foryarn control during the winding. The ordinary roller guide makes use ofcollars and flanges to hold the roller in place. Accordingly, muchdithculty has been experienced from yarn-fly buildingup between therolls and collars, which condition eventually efiects a binding actionon the roller guide, thus preventing the free turning of the same. Dueto the difierence in friction between the starting of the windingoperation and the finishing of said operation when employing 35 suchyarn guide rollers as those now in use, there is produced a yarn whichis not uniform. This lack of uniformity is due in part to a non-uniformapplication of the treating material, if any is applied, and to anon-uniform tension applied to the yarn. By the use of a roller guidemember constructed in accordance with this invention, the yarn is wound,twisted, etc. under an even tension by virtue of the rolling friction,regardless ofthe denier, speed or uniformity of the yarn.

Moreover, the construction of the roller guide is such that it cannotbecome bound by fly from the yarn.

In accordance with my invention, I construct a roller guide to beapplied to rewinding, twisting and other devices wherein the yarntravels from one point to another, which roller guide is adapted to beused in place of the pig tail guides, porcelain eyes, porcelain or metalhooks and other forms of stationary guide members, as well as theunsatisfactory roller guides, now employed. I

of a roller adapted to rotate upon a stationary or rotatable axle and soconstructed that it neither picks up nor accumulates fly thrown ofi fromthe 'yarn. The roller guide may be of any suitable material and of anysuitable size to adapt it for contact with various reagents found in orupon the yarn and to the various sizes of yarn that are to be guidedthereby. The body of the roller may lea-for instance, wood, porcelain,brass, steel, etc. If a metallic body is employed it may be coated orplated with porcelain, rust and chemical resisting metallic coatings,shellac, etc.

Referring to the drawing, the guide may be formed of a roller i having agrooved track-way 2 adapted to retain a travelling yarn in a givenposition. The groove 2, may be of any suitable shape, for instance Vshaped as shown in the drawing, or U shaped, and the pitch of the sidesor the depth of the groove may be of any suitable degree or dimension.The outer ends 3 of the roller are preferably tapered from the outermargin, indicated by reference character A, of the groove 2 to the axle.The pitch of the tapered ends'of the roller may be of any suitabledegree, for-example, from 30 to 80 from the axial line. The roller 3 maybesupported upon a shaft t in such a manner that it is free to rotatethereon.

The shaft t may be formed or have milled thereon a shoulder 5 at one endthereof to accommodate a bearing surface ii of the roller. The oppositeend of the shaft ii from the shoulder 5 is threaded as at l toaccommodate a bearing sleeve 8. The bearing sleeve 8 may be a piece oftubing hardened at least at its inner end to act as a bearing, which.tubehas internal threads adapting it to be threaded on to the shaft 5,thereby forming another bearing 9 adapted to accommodate the bearingsurface ii of the roller. That part of the shaft 5 lying between thebearing tube'3 and the shoulder 5 may be formed of such a diameter withreference to the axial hole in the roller that the shaft and roller donot contact. If desired, and in certain cases it is preferable, thatboth ends of the shaft 5 be threaded in a. manner similar to that shownin the drawing at l and both bearing surfaces may be formed from a tubeor sleeve similar to tube 8. I When tubes are employed as both bearingsurfaces, they may be formed of pressed cellulosic materials toeliminate the use of oil which is necessary to prevent a binding actionof metal against metal. The pressed ,cellulosic tubes may be formed ofcellulose, with or without other wood products being present, and abinding agent that'may also con- 2 amassed v able mannerand location.

yarn as well as yarn package.

In operation, the yarn travelling m the sup ply package to a take-uppackageis passed in contact with the groove 2 of the roller l and isguided with a rolling friction. The roller with itsenclosed bearingsurface and tapered ends is so designed that the yarn-fly, as itfalls'upon the roller sides, slips oi! the roller guide and will notbunch thereon to effect a binding tween the rotating ide and itsbearing.

By employing this invention, the yarn is guid ed with a rollingfriction, which rolling frictio n permits the production of a moreuniform When the de vice of the present invention is employed as theguiding means of a coating device a more level application of thecoating material is obtained as there is'less wiping action of the guideupon the coated yarn. Any fuzz or fly that comes from the yarn duringtwisting does not prevent the guide roller from turning which isthecasewhen rollers of other shapes or when flanges are used to hold the rollerguide in place. This type of roller guide produca a more uniformfriction on the yarn, resulting in the elimination of'damaged yarn whileat the same time the life of the by way of illustration and thatmanyvariatiohsl may bemade therein'without departing from the spirit ofmy invention.

Having described my invention, what I desire to secure by Letters Patentis:

1. As an attachment for a yarn processing de-' vice, a yarn guide forguiding the yarn with a rollingfrictlon, a shaft. a roller rocomprisingtatably carried thereby. said roller having ends which taper the edgesof said rollers down to the bore of said roller and, intermediate saidends, a groove with which the yarn is adapted-to contact in its travel,and means on the inside of said roller for positioning said roller whichtaper towards the edges of said roller down tothe bore of said rollerand a circumferential groove with which the yarn is adapted to contactin its travel, and means on the inside of said roller for positioningsaid roller axially on said shaft. 3. As an attachment for a yarnprocessing device, a yarn guide for guiding the yarn with a rollingfriction comprising a shaft, a roller rotatably carried thereby, saidroller having ends which taper towards the edges of the roller down tothe bore of said roller, a shoulder on said shaft positioned inside saidroller and adapted to act as one bearing member for said roller anda-tube threaded on said shaft and having one .end inside said roller soas to act as a secand bearing member for said roller.

HARHON HOWOR'I'H.

